- Take maintainership
- Add LICENSE=GPLv2 
- Update to git version from 2013 which fixes:
* ignore IPv4/IPv6 address hints when option -H is present.
* fix an error in the "hints" handling of the host resolver which confused
local/source and remote hint (AF_INET/AF_INET6).
6tunnel allows you to use services provided by IPv6 hosts with IPv4-only
applications and vice versa. It can bind to any of your IPv4 (default) or IPv6
addresses and forward all data to IPv4 or IPv6 (default) host. It can be used
for example as an ipv6-capable IRC proxy.